/* styles.css */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

body {
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

header {
    background-color: #E74C3C;
    color: white;
    padding: 20px 0;
    height: 50px;
}

.logo {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 10px;
    margin: 20px;
    color: white;
}

.slogan {
    font-size: 1rem;
    margin-bottom: 20px;
    margin-left: 20px;
    color: #ffffff;
    margin-top: -20px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.download-btn {
    /*background-color: white;*/
    color: #E74C3C;
     padding: 10px 10px;
    border-radius: 20px;
    text-decoration: none;
    font-weight: bold;
    transition: all 0.3s;
}

.download-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    cursor: pointer;
}

.features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 50px 20px;
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background-color: white;
    border-radius: 10px;
    padding: 30px;
    width: 300px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #E74C3C;
}

footer {
    background-color: #333;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 50px;
}

.divback {
    margin-top: -20px;
    width: 100%;
    height: 800px;
    background-image: url('bird.png');
    background-size: cover;
    background-position: center center; /* 垂直和水平方向都居中 */
    /*border-bottom-left-radius: 200px;*/
    /*border-bottom-right-radius: 200px;*/
}

@media (max-width: 768px) {
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .feature-card {
        width: 100%;
    }
}